Chemistry MCQs

Question 1

Global warming is mainly due to accumulation of

Accepted Answer

Carbon dioxide

Answer

Oxides of nitrogen

Answer

Oxides of sulphur

Answer

Carbon monoxide

Question 2

Main pollutants released from iron and steel industry are

Accepted Answer

CO, CO2 and SO2

Answer

NO, SO3 and H2S

Answer

CO2, H2S and NO2

Answer

CO2, NO2 and SO3

Question 3

Which one of the following is a major green house gas?

Accepted Answer

Carbon dioxide

Answer

Chloro fluorocarbon

Answer

Carbon monoxide

Answer

Freon

Question 4

The 'solid waste' is also known as

Accepted Answer

Sludge

Answer

Sedge

Answer

Toxic waste

Answer

Scrubber

Question 5

London smog is found in

Accepted Answer

Winter during morning time

Answer

Summer during day time

Answer

Summer during morning time

Answer

Winter during day time

Question 6

Photo chemical smog is a resultant of the reaction among

Accepted Answer

NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight

Answer

High concentration of NO2, O3, and CO in the evening

Answer

CO, CO2 and NO2 at low temperature

Answer

CO, O2 and peroxy acetyl nitrate in the presence of Sunlight

Question 7

The gas involved in Bhopal incident was

Accepted Answer

Methyl isocyanate

Answer

Hydrogen sulphide

Answer

Nitrogen dioxide

Answer

Methyl chloride

Question 8

Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

Accepted Answer

Chlorofluorocarbons

Answer

Nitrous oxide

Answer

Sulphur dioxide

Answer

Carbon dioxide

Question 9

Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ?

Accepted Answer

All the above

Answer

Landfills

Answer

Incineration

Answer

Pyrolysis and Gasification